Lumps of Coal Bath Bomb Recipe

By Nature's Garden Aug 15, 2025

Yield: 2 Bath Bombs

Jump To Directions

Recipe Ingredients

Equipment From Home

Recipe Ingredients

Equipment From Home

Directions

1. Other Ingredients & Equipment You'll Need:

2. Scale

3. Witch Hazel (in spray bottle)

4. 2- Clear Round Acrylic Fillable Ornaments- 3"diameter each

5. Mixing Bowls

6. Mixing Spoon

7. Rubber Spatula

8. Total Recipe Weights:

9. 132 grams Citric Acid

10. 263 grams Baking Soda

11. 68 grams Corn Starch

12. 5 grams Bentonite Clay

13. 1 gram Activated Charcoal

14. 30 grams Coconut Oil 76

15. 30 grams Hawaiian Black Salt- Fine Ground

16. 16 grams Hawaiian Black Salt- Coarse Ground

17. 8 grams Fun Soap Colorant- Black Oxide

18. 1 gram Elf Sweat Fragrance Oil

19. Bath bombs are best prepared in non-humid weather. Before making your bath fizzies, pour witch hazel into the 8 oz. PET bullet bottle and place a fine mist sprayer on top.

20. Step 1: In a mixing bowl, prepare your dry ingredients. Use a scale to weigh out 263 grams of baking soda, 68 grams of corn starch, 30 grams of the fine Hawaiian black salt, 1 gram of activated charcoal, and 5 grams of the bentonite clay. Use your hand to break up any clumps.

21. Step 2: In a second small bowl weigh out 30 grams of coconut oil 76, 1 gram of Elf Sweat fragrance oil and 8 grams of Black Oxide FUN Soap Colorant. Mix the oils and colorant together.

22. Step 3: Using your spatula, add the oils to the dry ingredients bowl. Then, use your hands to mix them together. You will want to make sure all of the ingredients are evenly mixed.

23. Step 4: Now, add 132 grams of the citric acid to the mixing bowl. Again, use your hands to incorporate the citric acid throughout. Make sure to break up any clumps you find.

24. Step 5: Next prepare the bath bomb molds. Weigh out 16 grams of the Hawaiian black salt coarse. Using a mixing spoon, place 8 grams of the salt into one-half of each fillable ornament.

25. Step 6: Spray the mixture slowly with witch hazel. As you spray, use your hands to mix the ingredients. Continue spraying until the mixture feels like crumbly dough. Be careful not to overspray.

26. Step 7: Begin filling your ornaments. As you fill the mold press down firmly. Once filled, spray each mold with witch hazel. Finally, attach the two halves together.

27. Your Lumps of Coal Bath Bombs are now ready for use. Simply place the bath bomb in your bath tub and let it fizz!

To Use

Natures Garden is not responsible for the performance of any of the recipes provided on our website. Testing is your responsibility. If you plan to resell any recipes we provide, it is your responsibility to adhere to all FDA regulations if applicable. If there are ingredients listed in a recipe that Natures Garden does not sell, we cannot offer any advice on where to purchase those ingredients. We also do not offer any advice on formulating or altering recipes.